Ext.application({
	name : "column",
	launch : function() {
		Ext.create('Ext.panel.Panel', {
			title : 'column layout',
			width : 350,
			height : 250,
			x : 20,
			y : 30,
			layout : 'column',
			items : [ {
				title : "column 1",
				columnWidth : .25
			}, {
				title : "column 2",
				columnWidth : .25
			}, {
				title : "column 3",
				columnWidth : .50
			} ],
			renderTo : Ext.getBody()
		});
	}
});